A method for arranging a lead screw type electric side-hinged door limiter

Abstract

The application provides a method for arranging a screw rod type electric side opening door stopper, which comprises the following steps: step S1, boundary input: inputting the peripheral boundary of the stopper; step S2, determining the design plane of the stopper; step S3, initially placing the stopper and defining the shaft center and the ball center; step S4, making the motion track of the shaft center; step S5, making the screw rod of the stopper; step S6, making the screw rod envelope; step S7, checking and adjusting the positions of the screw rod support and the motor mounting seat to obtain the ideal arrangement position of the stopper, and completing the arrangement of the stopper. The application solves the problems of high experience requirement of the designer and long arrangement period of the stopper in the prior art, effectively reduces the experience requirement of the designer, and shortens the arrangement period of the stopper.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive door limiters, specifically relating to a method for arranging a screw-type electric side-opening door limiter. Background Technology

[0002] The screw-type electric side door limiter is a common type of electric limiter used for the electric opening and closing of automotive side doors. Its structure is as follows: Figure 1 As shown, during installation, the lead screw bracket 11 and the lead screw assembly 13 are first connected to each other through the connecting shaft 15. Then, the lead screw bracket is connected to the vehicle body, the motor mounting bracket 12 is connected to the door, and the nut assembly 14 is connected to the motor mounting bracket. The lead screw assembly and the nut assembly are driven to each other by threaded transmission. The motor drives the nut assembly 14 to slide on the lead screw together with the door in the motor mounting bracket, thereby driving the door to close and open.

[0003] The current method for arranging screw-type electric side-opening door limiters in automobiles mainly relies on the designer's experience to determine the appropriate position. This places high demands on the designer's experience and requires a long arrangement period. Therefore, how to design an arrangement method for screw-type electric side-opening door limiters that reduces the reliance on the designer's experience and shortens the arrangement cycle has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a method for arranging a screw-type electric side-opening door limiter to solve the above-mentioned technical problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for arranging a screw-type electric side-opening door limiter includes the following steps:

[0007] Step S1, Boundary Input: Input the peripheral boundary of the limit switch;

[0008] Step S2: Determine the design plane of the limit switch:

[0009] Determine the height position of the limiter, and create a plane at that height position. This plane is perpendicular to the axis of the door hinge and is defined as the design plane of the limiter.

[0010] Step S3, Initial placement of the limit switch:

[0011] Initially, the lead screw support and motor mounting base of the limit switch are placed in the position of the design plane, ensuring that the axis of the lead screw support is perpendicular to the design plane, and the intersection of the axis of the lead screw support and the design plane is defined as the axis center; the center of the nut assembly inside the motor mounting base is on the design plane, and the center of the nut assembly is defined as the ball center;

[0012] Step S4: Create the motion trajectory of the axis:

[0013] Rotate the aforementioned axis along the door hinge axis to the maximum opening angle of the door. The direction of rotation is opposite to the direction of door opening. During the rotation, a set angle interval is used to obtain an axis position. The positions of the axes together constitute the motion trajectory of the axis.

[0014] Step S5: Make the lead screw for the limit switch:

[0015] Connect the axis center and the ball center with a straight line, which is the center line of the lead screw. Create the planar profile of the lead screw in the design plane, which is the initial position of the lead screw. Measure the distance between the axis center and the ball center, which is defined as the length L of the lead screw.

[0016] Step S6: Create the lead screw envelope:

[0017] First, the position of the lead screw when the car door is opened to the first set angle is determined. A circle is created with the axis at this first set angle as the center and the lead screw length L as the radius. The initial positions of the lead screw outline, center line, and sphere center are moved parallel to the initial position of the axis at the first set angle, resulting in a virtual center line, virtual outline, and virtual sphere center for the lead screw at the first set angle. The circle created above intersects with the virtual center line of the lead screw at the first set angle, obtaining an intersection point. Using the axis at the first set angle as the center, the virtual center line and virtual outline of the lead screw at the first set angle are rotated from the virtual sphere center position at the first set angle back to the initial sphere center position, thus obtaining the actual position of the lead screw at the first set angle. Following this principle, the lead screw positions when the car door is opened to the second set angle, the third set angle, and up to the maximum opening angle of the car door are sequentially created, resulting in the lead screw envelope at each angle.

[0018] Step S7: Verify and adjust the positions of the lead screw bracket and motor mounting base to obtain the ideal arrangement position of the limit switch, thus completing the arrangement of the limit switch.

[0019] Preferably, in step S1, the peripheral boundary of the limiter includes the door hinge axis, door glass, door guide rail, door sheet metal, body sheet metal, door sealing strip, etc.

[0020] Preferably, in step S2, the lead screw support and motor mounting base are placed at the designed plane position using a coordinate movement method.

[0021] Preferably, in step S4, the set angle is 4° to 6°.

[0022] Preferably, in step S4, the set angle is 5°.

[0023] Preferably, in step S4, the angle of the axis at the initial position is set to 0°.

[0024] Preferably, in step S7, the specific content of checking and adjusting the position of the lead screw support and the motor mounting base includes: checking whether the gap between the lead screw envelope and its surrounding accessories meets the safety gap requirements. If yes, the ideal arrangement position of the limiter is obtained; if no, the position of the lead screw support, the motor mounting base and the above-mentioned angle are adjusted, and the lead screw envelope is updated until the gap between it and the surrounding accessories meets the safety gap requirements, that is, the ideal arrangement position of the limiter is obtained.

[0025] Preferably, in step S7, a lead screw envelope detection device is used to detect whether the gap between each lead screw envelope and its surrounding accessories meets the safety gap requirements.

[0026] Preferably, the lead screw envelope detection device includes a lead screw envelope detection block, a door motion component module, a body component module, a door hinge module, and a device base.

[0027] The beneficial effects of this invention are as follows:

[0028] The screw-type electric side-opening door limiter arrangement method of the present invention solves the problems of high requirements for designer experience and long arrangement cycle of existing limiter arrangement methods, effectively reducing the requirements for designer experience and shortening the arrangement cycle of limiters. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly described below, and the specific embodiments of the present invention will be further described in detail with reference to the drawings, wherein...

[0030] Figure 1 A schematic diagram of an existing screw-type electric side-opening door limiter;

[0031] Figure 2 A flowchart illustrating the arrangement method of the screw-type electric side-opening door limiter provided in an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of the peripheral boundary of the limiter provided in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram showing the positions of the axis and the center of the sphere provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the axis motion trajectory provided in an embodiment of the present invention;

[0035] Figure 6This is a schematic diagram of the lead screw profile at the initial position provided in an embodiment of the present invention;

[0036] Figure 7 A schematic diagram of the virtual profile of the lead screw when the car door is opened to 5°, provided in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the actual position of the lead screw when the car door is opened 5°, as provided in an embodiment of the present invention.

[0038] Figure 9 This is a schematic diagram of the various lead screw envelopes provided in the embodiments of the present invention;

[0039] Figure 10 This is a schematic diagram of the lead screw envelope detection device provided in an embodiment of the present invention during use.

[0040] Marked in the attached diagram:

[0041] 11. Lead screw bracket; 12. Motor mounting base; 13. Lead screw assembly; 14. Nut assembly.

[0042] 15. Connecting shaft; 16. Lead screw cover; 17. Bearing;

[0043] 21. Door hinge axis; 22. Lead screw bracket; 23. Body sheet metal.

[0044] 24. Door sheet metal; 25. Door rails; 26. Door glass.

[0045] 27. Axis; 28. Center of the sphere; 31. Trajectory of the axis of motion.

[0046] 32. Lead screw profile; 33. Virtual lead screw profile when the car door is opened 5°;

[0047] 34. The actual position of the lead screw when the car door is opened 5°;

[0048] 41. Lead screw envelope detection block; 42. Door motion component module.

[0049] 43. Door hinge module; 44. Body component module; 45. Device base;

[0050] 51. Limiter. Detailed Implementation

[0051] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0052] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0053] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0054] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0055] like Figures 2 to 10 As shown, this embodiment of the invention provides a method for arranging a screw-type electric side-opening door limiter, which includes the following steps:

[0056] Step S1, Boundary Input: Input the peripheral boundary of the limit switch;

[0057] Step S2: Determine the design plane of the limit switch:

[0058] The height position of the limiter can be determined according to the installation position of the limiter on the actual vehicle. A plane is made at this height position, which is perpendicular to the door hinge axis 21. This plane is defined as the design plane of the limiter.

[0059] Step S3, Initial placement of the limit switch:

[0060] Initially, the lead screw bracket 22 of the limit switch and the motor mounting base are placed in the position of the design plane, ensuring that the axis of the lead screw bracket is perpendicular to the design plane. The intersection of the axis of the lead screw bracket and the design plane is defined as the axis 27. The center of the nut assembly inside the motor mounting base is on the design plane, and the center of the nut assembly is defined as the ball center 28.

[0061] Step S4: Create the motion trajectory of the axis:

[0062] Rotate the aforementioned axis along the door hinge axis to the maximum opening angle of the door. The direction of rotation is opposite to the direction of door opening. During the rotation, a set angle is obtained at each axis position. The positions of each axis position together constitute the motion trajectory 31 of the axis.

[0063] Step S5: Make the lead screw for the limit switch:

[0064] Connect the aforementioned axis center and ball center to form a straight line, which is the centerline of the lead screw. Create the planar profile of the lead screw in the design plane, and this lead screw profile 32 is the initial position profile of the lead screw. Measure the straight-line distance between the axis center 27 and the ball center 28, and define this distance as the lead screw length L.

[0065] Step S6: Create the lead screw envelope:

[0066] First, create the position of the lead screw when the car door is opened to the first set angle. Using the axis at this first set angle as the center and the lead screw length L as the radius, create a circle. Move the initial positions of the lead screw outline, center line, and sphere center parallel to the initial position of the axis at the first set angle, obtaining the virtual center line, virtual outline, and virtual sphere center of the lead screw at the first set angle. Intersect the circle created above with the virtual center line of the lead screw at the first set angle, obtaining an intersection point. Using the axis at the first set angle as the center, rotate the virtual center line and virtual outline of the lead screw at the first set angle from the virtual sphere center position at the first set angle back to the initial sphere center position, thus obtaining the actual position of the lead screw at the first set angle. Following this principle, sequentially create the lead screw positions when the car door is opened to the second set angle, the third set angle, and up to the maximum opening angle of the car door, obtaining the lead screw envelope at each angle.

[0067] Step S7: Verify and adjust the positions of the lead screw bracket 22 and the motor mounting base to obtain the ideal arrangement position of the limit switch, thus completing the arrangement of the limit switch.

[0068] The screw-type electric side-opening door limiter arrangement method provided in this invention solves the problems of high requirements for designer experience and long arrangement cycle of existing limiter arrangement methods, effectively reducing the experience requirements for designers and shortening the arrangement cycle of limiters.

[0069] Furthermore, in step S1, the peripheral boundary of the limiter includes the door hinge axis 21, the door glass 26, the door guide rail 25, the door sheet metal 24, the body sheet metal 23, the door sealing strip, etc.

[0070] Preferably, in step S2, the lead screw bracket 22 and the motor mounting base are placed at the designed plane position using a coordinate movement method. It can be understood that the axis of the lead screw bracket is the axis of the connecting shaft after the lead screw bracket and the connecting shaft are installed, and also the axis of the mounting hole on the lead screw bracket used to install the connecting shaft.

[0071] Specifically, in step S4, the set angle is 4° to 6°.

[0072] In a specific embodiment, in step S4, the set angle is 5°, and the angle of the axis at the initial position is set to 0°. At this time, the specific content of this step is as follows: rotate the above-mentioned axis along the door hinge axis to the maximum opening angle of the door. The rotation direction is opposite to the door opening direction. During the rotation, an axis position is obtained every 5°. For example, if the maximum opening angle of the door is 60°, the axis positions when the door is opened to 5°, 10°, 15°, 20° and up to 60° are obtained respectively. At this time, a total of 60÷5=12 axis positions are obtained. These 12 axis positions together constitute the movement trajectory of the axis.

[0073] In the above specific embodiment, the set angles in step S6 are successively 5°, 10°, 15° up to 60°. The specific content is as follows: First, the position of the lead screw when the car door is opened to 5° is determined. A circle is created with the axis at 5° as the center and the lead screw length L as the radius. The initial positions of the lead screw outline, lead screw center line, and ball center are moved parallel to the initial position of the axis at 0° and then to the position of the axis at 5°, thus obtaining the virtual center line of the lead screw, the virtual outline 33 of the lead screw, and the virtual ball center at 5°. Figure 7 As shown, the circle created above intersects with the virtual center line of the lead screw at 5°, obtaining an intersection point. Using the axis at 5° as the center, the virtual center line and virtual contour of the lead screw at 5° are rotated from the virtual sphere center position at 5° to the sphere center position at 0°, to obtain the actual position 34 of the lead screw at 5°. Figure 8 As shown; following this principle, the positions of the lead screw when the car door is opened to 10°, 15°, 20°, and up to 60° are sequentially fabricated, thus obtaining the envelope of the lead screw at each angle, as shown. Figure 9 As shown.

[0074] Furthermore, in step S7, the specific content of checking and adjusting the position of the lead screw support 22 and the motor mounting base includes: checking whether the gap between each lead screw envelope and its surrounding accessories meets the safety gap requirements. If yes, the ideal arrangement position of the limiter is obtained, that is, the current position is the ideal arrangement position of the limiter; if no, the position of the lead screw support, the motor mounting base and the above-mentioned angle are adjusted, and the lead screw envelope is updated until the gap between it and the surrounding accessories meets the safety gap requirements, that is, the ideal arrangement position of the limiter is obtained, that is, the adjusted position is the ideal arrangement position of the limiter.

[0075] Specifically, the above arrangement method can be used in 3D software such as CAITIA. The software's PART function can be used to create various digital models, which facilitates parameter settings. After the positions of the lead screw support and motor mounting base are adjusted, the software can automatically generate a new lead screw envelope in a short time. After repeated adjustments, the ideal arrangement position of the limit switch can be obtained, thus completing the arrangement of the limit switch and further shortening the arrangement time.

[0076] Preferably, in step S7, a lead screw envelope detection device is used to detect whether the gap between each lead screw envelope and its surrounding accessories meets the safety gap requirements, thereby making it convenient to detect whether the gap between each lead screw envelope and its surrounding accessories meets the safety gap requirements.

[0077] Specifically, the lead screw envelope detection device includes a lead screw envelope detection block 41, a door motion component module 42, a body component module 44, a door hinge module 43, and a device base 45. Using this scheme, the lead screw envelope detection block, door motion component module, body component module, and door hinge module respectively simulate the corresponding accessories around the limit switch on the actual vehicle. During testing, the limit switch 51 is installed on the detection device according to its position on the actual vehicle, allowing the lead screw to move within the range defined by its respective envelope lines. If, during the movement, it does not interfere with the lead screw envelope detection block 41 on the detection device, it indicates that the gap between it and the surrounding accessories meets the safety gap requirements; otherwise, the gap between it and the surrounding accessories does not meet the safety gap requirements.

[0078] The screw-type electric side-opening door limiter arrangement method provided in this invention solves the drawbacks of existing limiter arrangement methods, such as long cycle and imprecise manufacturing. The arrangement method designed in this invention greatly shortens the limiter arrangement cycle, which is of great significance to the development of vehicles by vehicle manufacturers.

[0079] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A method of arranging a lead screw type electric sliding door limiter, characterized by, It comprises the following steps: Step S1, boundary input: input the peripheral boundary of the limit stopper; Step S2, determine the design plane of the limit stopper: Determine the height position of the limit stopper, make a plane at the height position, which is perpendicular to the door hinge axis, and define the plane as the design plane of the limit stopper; Step S3, preliminary placement of the limit stopper: Preliminarily place the screw rod support and the motor mounting seat of the limit stopper at the position of the design plane, ensure that the axis of the screw rod support is perpendicular to the design plane, define the intersection of the axis of the screw rod support and the design plane as the shaft center, and define the center of the nut assembly in the motor mounting seat on the design plane as the ball center; Step S4, make the movement trajectory of the shaft center: Rotate the above-mentioned shaft center along the door hinge axis to the maximum opening angle of the door, the rotating direction is opposite to the opening direction of the door, obtain a shaft center position every interval of a set angle during the rotating process, and the shaft center positions jointly constitute the movement trajectory of the shaft center; Step S5, make the screw rod of the limit stopper: Connect the above-mentioned shaft center and the ball center into a straight line, the straight line is the center line of the screw rod, make the plane contour of the screw rod in the design plane, the contour is the initial position of the screw rod, and measure the distance between the shaft center and the ball center, which is defined as the length L of the screw rod; Step S6, make the envelope line of the screw rod: Firstly, make the position of the screw rod when the door is opened to a first set angle, make a circle with the shaft center at the first set angle as the center and the length L of the screw rod as the radius; parallelly move the screw rod contour, the center line of the screw rod and the initial position of the ball center from the initial position of the shaft center to the position of the shaft center at the first set angle, to obtain the virtual center line of the screw rod, the virtual contour of the screw rod and the virtual ball center at the first set angle; intersect the circle made above with the virtual center line of the screw rod at the first set angle, to obtain an intersection point; take the shaft center at the first set angle as the center, rotate the virtual center line of the screw rod at the first set angle, the virtual contour of the screw rod at the first set angle and the virtual ball center from the virtual ball center position at the first set angle to the ball center position at the initial position, to obtain the real position of the screw rod at the first set angle; according to the principle, sequentially make the positions of the screw rod when the door is opened to a second set angle, a third set angle and the maximum opening angle of the door, to obtain the envelope line of the screw rod at each angle; Step S7, check and adjust the positions of the screw rod support and the motor mounting seat, to obtain the ideal arrangement position of the limit stopper, and complete the arrangement of the limit stopper.

2. The method of claim 1, wherein, In step S1, the peripheral boundary of the limit stopper comprises the door hinge axis, the door glass, the door guide rail, the door sheet metal, the vehicle body sheet metal and the door sealing strip.

3. The method of claim 1, wherein, In step S2, the screw rod support and the motor mounting seat are placed at the position of the design plane by using the method of coordinate movement.

4. The method of claim 1, wherein, In step S4, the set angle is 4° to 6°.

5. The method of claim 4, wherein, In step S4, the set angle is 5°.

6. The method of claim 1, wherein, In step S4, the angle of the shaft center at the initial position is set as 0°.

7. The method of claim 1, wherein, In step S7, the specific content of checking and adjusting the position of the screw rod support and the motor mounting seat includes: checking whether the gap between each screw rod envelope and its peripheral accessories meets the safety gap requirement, if yes, the ideal arrangement position of the limit stopper is obtained; if no, the position of the screw rod support, the motor mounting seat and the above-mentioned angle are adjusted, the screw rod envelope is updated until the gap between the screw rod envelope and its peripheral accessories meets the safety gap requirement, that is, the ideal arrangement position of the limit stopper is obtained.

8. The method according to any one of claims 1 to 7, wherein, In step S7, the gap between each screw rod envelope and its peripheral accessories is detected by using the screw rod envelope detection device to check whether the gap meets the safety gap requirement.

9. The method of claim 8, wherein, The screw rod envelope detection device comprises a screw rod envelope detection block, a door movement assembly module, a vehicle body assembly module, a door hinge module and a device base.

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